Have you wondered why bystanders interviewed by TV news crews all seem to have terribly bad teeth. The yukky yellow makes it look as thought they have not cleaned their teeth for a year. However, the natural color for teeth is a yellow off-white, not dazzling white.

Movie stars and nearly all celebrities in the public eye have their teeth artificially whitened. When they choose the shade of white they all obviously choose the brightest white they can get. A great boon for dentists but bad for the mineral industry. The demand for gold for filling teeth has fallen by 60 per cent in the last decade.

Gold "amalgam" is no longer popular. People with gold fillings looked disgusting anyway. The dark color looked too much like tooth decay. New ceramic filling materials in many shaded of white triggered the initial dislike of gold. Whiter than white is the "here to stay" fad.

False teeth could also become a thing of the past as old and young people have teeth implants when the original teeth will not take anymore filling or become diseased. Like the tech industry, culture is changing. People change; tastes change.

Blueberries aren't that popular in Australia. They are certainly not loved, as in the USA. However, Australian farmers are growing more of them as Australians look for something different. There is also a thriving international market.

The Clarence Valley in Grafton, NSW is the main growing region for the product. At present Australian growers supply only a tiny amount of berries to the world. Yet, Australia uses the latest genetic technology to grow good blueberries.

Hard quarantine laws stop Australia getting into the China market. Maybe this is quid pro quo for Australia's brick wall against New Zealand growers of fruit and vegetables in general. Four years ago Japan blocked imports into that country. It was only an increase in local demand that saved the industry.

Australian blueberry farmers are raising output despite there being no real overseas target market in sight. The recent summit at Coffs harbour did not change the existing state of affairs. Delegates from 25 countries attended. This was not a good investment for the Australian blueberry industry nor government.

Conservation has always been ideologically polarized in Australia. There are those who seem to want to stop all development to prevent any deleterious change and those who want to rape the environment in search of the holy dollar - and ne'er the twain shall meet! With the Greens now gaining a handful of seats in the Senate they have voting power beyond their number. All shades of national government will have to compromise. Even state governments are not free of the Green "scourge", as they see it.

There is an issue with a planned coalmine in Queensland, the Carmichael mine near Bowen. Former premier Campbell Newman was fully supportive of the development and showed an intention to introduce new legislation to achieve it. This has changed. Labor is not so enamored with new projects at any cost. This is the case even though the Greens do not have the balance of power in the Queensland parliament.

Like medication you get from your doctor - there are always side effects. The natural environment will certainly be damaged in some way by a new mine. Objectors say the black-throated finch which is already threatened will be wiped out. Even the Waxy Cabbage Palm could be decimated. The evergreen problem of changes in water flow means that Doongmabulla Springs will probably dry up.

Claims by the investor Adani that a 30,999ha site will be set aside for the bird are not based on solid theory. The birds have access to that area already. And land used in the development will be taken away. Black-throated finch prefer their home ground and have never been known to travel to new areas. Raving about economic benefits will not change the views of ardent greens.

For the first time economic theory is being challenged by the Internet. Economics has always put forward the premise that the consumer was all-knowing, in that the "going price" for products was known. Of course, in the past this has been a lie. The demand curve was absolutely false. Buyers did not know where they could get the best price.

Now, potential buyers can go to a store, try on a particular brand of clothing to find the correct size, then go and buy it on the Internet. Some shops are charging for such browsing. This will only drive consumers away to another store.

There isn't much doubt that there are too many stores in the market selling the same goods. This is a problem caused by local councils allowing shopping center development even when it is contrary to local planning laws. Councils are too easily influenced by cashed-up big business.

As chain stores move into populated centers of rural areas the future looks bleak for the corner store. The days of local monopolies of one grocery store, one fruit shop, a chemist and a fishmonger are well and truly gone. It is no wonder the majority of small startups fail.

We cannot turn back the clock. The consumer is currently very informed about price if not quality. Economics never did include quality into its theories. It cannot easily be defined. With oligopolies taking over small rivals economics is no longer relevant. It cannot be applied any more. The idea that prices fall to clear the market of "surplus" products was never real world practice. Shops have always operated on a percentage mark-up.